Calculadora de Relación Señal a Ruido (SNR)

Signal-to-Noise Ratio (SNR) is a fundamental performance metric in RF receiver design that quantifies the quality of a received signal relative to background noise. The noise floor represents the minimum signal level at which a receiver can detect and process information effectively. It is fundamentally determined by thermal noise, calculated using the Boltzmann constant (k), absolute temperature (T), and system bandwidth (B). Receiver sensitivity is a function of this noise floor, modified by the receiver's noise figure (NF), which represents additional noise introduced by system components like amplifiers and mixers. A lower noise figure indicates better receiver performance, allowing detection of weaker signals. The thermal noise floor follows the equation: N = kTB, where k is Boltzmann's constant (1.38 × 10^-23 J/K), T is absolute temperature (typically 290K), and B is system bandwidth. Increasing bandwidth directly increases noise power, while improving front-end noise figure can enhance overall receiver sensitivity.